Littelfuse 2.5 A Resettable Fuse 72V Radial Lead RXEF250

Littelfuse RXEF250 2.5 A Resettable Fuse with 72V voltage rating and radial lead orientation provides protection for electrical and electronic circuits against excessive currents. This PolySwitch™ RXE Series fuse is designed for reliable and automatic resetting, making it ideal for use in printers, industrial controls, transformers, computer motherboards, USB hubs, phones, and telecommunication devices.

The fuse features a low hold current of 2.5A and can handle a current rating of up to 40A with a trip current of 5A, offering effective overcurrent protection with a fast time-to-trip of 16 seconds. Its compact size (20.8mm length, 25.4mm height, and 3mm width) and radial lead orientation allow easy PCB mounting and integration into various applications.

Constructed to be halogen free and RoHS compliant, the RXEF250 aligns with environmental safety standards. It is approved by multiple certification agencies including CQC, CSA, TUV, and UL. The fuse dissipates power at 2.5W and maintains low resistance values (minimum 0.05 Ω, maximum 130 mΩ) to minimize energy loss during operation. It operates reliably within a temperature range of -40°C to 60°C.

This resettable fuse automatically transitions from a low resistance state to a high resistance state during electrical overload or short circuits, resetting quickly once the fault is cleared, without the need for replacement. Its maintenance-free and small-size design eliminates the need for external fuse holders, enhancing installation efficiency.

Main industrial and commercial applications include security systems, power supplies, power switching devices, automotive and medical equipment, instrumentation and control systems, computers, audiovisual, and telecommunications equipment.

Automatically resets thousands of times without replacement. Low hold current of 2.5A supports sensitive electronic applications. Rated for 72V voltage and 40A maximum current with 5A trip current. Fast and reliable trip time of 16 seconds under overload.

Compact size suitable for efficient PCB mounting. Halogen free and RoHS compliant for environmental safety. Certified by CQC, CSA, TUV, and UL. Low resistance values reduce power dissipation. Durable operation across wide temperature range (-40°C to 60°C).

Safety and maintenance benefits for electronic and electrical circuits. Explore more Littelfuse Resettable Fuses and related circuit protection devices available at EnvMart for industrial, laboratory, and commercial applications.